Auto-generate Javadoc on release

Author: Andre601

.github/workflows/release_actions.yml

@@ -7,11 +7,25 @@ on:
     - master
 
 jobs:
+  generateJavadoc:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout Code
+      uses: actions/checkout@v2.3.2
+    - name: Set up Java 11
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.11
+    - name: Generate Javadoc
+      run: ./gradlew javadoc
   publish:
+    needs: [generateJavadoc]
+    if: success()
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2.3.2
-    - name: Set up JDK 1.8
+    - name: Checkout Code
+      uses: actions/checkout@v2.3.2
+    - name: Set up Java 8
       uses: actions/setup-java@v1
       with:
         java-version: 1.8